After Turing the torch on it can be easily turned off hain the power button. Like in Vivo Smartphones, if the torch is on, pressing the power button first time turns off the screen and then in that closed screen if we press power button again, it turns off the torch/flashlight.
press and hold the power button then tap on 'side key settings' and then enable it and select open app where will be a setting icon displaying tap on it then select it. After it when you will double press your power button the torch will automatically on , to turn off you will have to press double your power button agin. Hope it helped you...
